HP C/iX Library Reference Manual (30026-90004)

Chapter 5 361
HP C/iX Library Function Descriptions
tanh
tanh
Computes the hyperbolic tangent value for a given angle.
Syntax
#include <math.h>
double tanh (double x );
Parameters
x A real number giving the angle measured in radians.
Return Values
n The hyperbolic tangent of the angle.
Description
This function returns the hyperbolic tangent of its argument ( x ) in radians.
See Also
sin(), cos(), ANSI C 4.5.3.3, POSIX.1 8.1